You had a really nice groove going at the start, but I had the feeling you didn't know what to add once you returned back to the basic beat at the midst of the song. You were adding synths and whatnot usin your bassline as... baseline.. , but I felt like you really should've focused some more on the drums and try to keep the groovy feeling instead of only just expanding your drums at the ending even though you'd been doing tons of things with your synths, which is probably why the end of the song came far too soon and abrupt. The drums should've come in way earlier.

Other than that expansion seemed necessary. The song didn't feel so finished to me. But, positive; The melodies were nice and the groove beat at the start was really good. You also know how to work with the slider, which I tend to avoid myself. :P